enhance(dev): メモリ使用量比較のActionsでGCしてから取得する

Resolve #16961

packages/backend/scripts/measure-memory.mjs

@@ -25,11 +25,13 @@ async function measureMemory() {
 	const startTime = Date.now();
 
 	// Start the Misskey backend server using fork to enable IPC
-	const serverProcess = fork(join(__dirname, '../built/boot/entry.js'), [], {
+	const serverProcess = fork(join(__dirname, '../built/boot/entry.js'), ['expose-gc'], {
 		cwd: join(__dirname, '..'),
 		env: {
 			...process.env,
-			NODE_ENV: 'test',
+			NODE_ENV: 'production',
+			MK_DISABLE_CLUSTERING: '1',
+			MK_FORCE_GC: '1',
 		},
 		stdio: ['pipe', 'pipe', 'pipe', 'ipc'],
 	});

packages/backend/src/boot/entry.ts

@@ -86,6 +86,10 @@ if (!envOption.disableClustering) {
 	ev.mount();
 }
 
+if (envOption.forceGc && global.gc != null) {
+	global.gc();
+}
+
 readyRef.value = true;
 
 // ユニットテスト時にMisskeyが子プロセスで起動された時のため

packages/backend/src/env.ts

@@ -11,6 +11,7 @@ const envOption = {
 	verbose: false,
 	withLogTime: false,
 	quiet: false,
+	forceGc: false,
 };
 
 for (const key of Object.keys(envOption) as (keyof typeof envOption)[]) {